<template>
  <view>
    <view class="goods-list">
      <view v-for="(item, i) in goodsList" :key="i" @click="gotoDetail(item)">
        <!-- 为 my-goods 组件动态绑定 goods 属性的值 -->
        <my-goods :goods="item"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 请求参数对象
        queryObj: {
          query:'',
          cid:'',
          pagenum:1,
          pagesize:10
        },
        goodsList:[],
        total:0,
        // 节流阀
        isloading:false
      }
    },
    
    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      // console.log(options)
      this.getGoodsList()
    },
    
    methods: {
        // 获取商品列表数据的方法
        async getGoodsList(cb) {
          // 打开节流阀
          this.isloading = true
          // 发起请求
          const { data: res } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
          // 关闭节流阀
          this.isloading = false
          cb && cb()
          if (res.meta.status !== 200) return uni.$showMsg()
          // 为数据赋值
          // 新旧数据的拼接
          this.goodsList = [...this.goodsList,...res.message.goods]
          this.total = res.message.total
        },
        
        // 下拉刷新
        onReachBottom() {
          if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
          if(this.isloading) return
          this.queryObj.pagenum+=1
          this.getGoodsList()
        },
        
        // 上拉刷新
        onPullDownRefresh() {
          // 重置关键数据
          this.queryObj.pagenum = 1
          this.total = 0
          this.isloading = false
          this.goodsList = []
           // 2. 重新发起请求
          this.getGoodsList(() => uni.stopPullDownRefresh())
        },
        
        // 跳转到商品详情
        gotoDetail(item) {
          uni.navigateTo({
            url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
          })
        }
    }
  }
</script>

<style lang='scss'>
  
</style>
